(2x+3)(x+2)=91

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Solution for (2x+3)(x+2)=91 equation:


Simplifying
(2x + 3)(x + 2) = 91

Reorder the terms:
(3 + 2x)(x + 2) = 91

Reorder the terms:
(3 + 2x)(2 + x) = 91

Multiply (3 + 2x) * (2 + x)
(3(2 + x) + 2x * (2 + x)) = 91
((2 * 3 + x * 3) + 2x * (2 + x)) = 91
((6 + 3x) + 2x * (2 + x)) = 91
(6 + 3x + (2 * 2x + x * 2x)) = 91
(6 + 3x + (4x + 2x2)) = 91

Combine like terms: 3x + 4x = 7x
(6 + 7x + 2x2) = 91

Solving
6 + 7x + 2x2 = 91

Solving for variable 'x'.

Reorder the terms:
6 + -91 + 7x + 2x2 = 91 + -91

Combine like terms: 6 + -91 = -85
-85 + 7x + 2x2 = 91 + -91

Combine like terms: 91 + -91 = 0
-85 + 7x + 2x2 = 0

Factor a trinomial.
(-17 + -2x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-17 + -2x)' equal to zero and attempt to solve: Simplifying -17 + -2x = 0 Solving -17 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + -2x = 0 + 17 Combine like terms: -17 + 17 = 0 0 + -2x = 0 + 17 -2x = 0 + 17 Combine like terms: 0 + 17 = 17 -2x = 17 Divide each side by '-2'. x = -8.5 Simplifying x = -8.5

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-8.5, 5}

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